Sheet-synchronizing mechanism.



A. NOVICK.

SHEET SYNCHRONIZING MECHANISM.

APPLICATION FILED SEPT-17,1913.

1,212,242. Patented Jan.16,1917.

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SHEET SYNCHRONIZING MECHANISM.

APPLlCATiON FILED SEPT. 17. 1913.

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ABRAHAM NOVICK, OF BROOKLYN, NIEW YORK, ASSIGNOR TO F. In. SCHMIDTCOMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

SHEET-SYNCHRONIZING MECHANISM.

Specification of Letters Patent.

Patented J an. 16,1917.

Application filed September 17, 1918. Serial No. 790,181.

To all whom it may concern:

Be it known that I, ABRAHAM NOVICK, a citizen of the United States, anda resident of New York, borough of Brooklyn, in the 5 county of Kingsand State of New York,

have invented certain new and useful Improvements in Sheet-SynchronizingMechanisms, of which the following is a specification.

This invention relates to sheet feeding means and particularly tomechanism for successively synchronizing thesheets as they are advancedby the feeding mechanism.

The object of my improvements is to provide means of the characterspecified, simple in construction, positive in operation at high speed,and easily and accurately adjustable for sheets of varying sizes andcontour.

,With these ends in view my improvements comprise features illustratedin their preferred form in the drawings accompanying-this specification,wherein- Figure l is a plan view of so much of a feeding mechanism aswill suflice to illustrate my improvements. Fig. 2 is a sectional sideelevation on line 2-2 of Fig.1. Figs. 3 to 6 inclusive are diagrammaticside elevations illustrating successive steps in the operation of myimprovements.

Before describing the invention in detail Idesire to have it understoodthat the invention is not limited to the particular construction and.arrangement of parts which 5 I have illustrated and shall hereinafterdescribe, and that various changes may be made in the mechanism-shownwithout departing from-the s irit or sco e of the mvention, and that t ephraseo ogy which I g 40 emplo is for the not 0 limitation.

The mechanism of the present application is particularly adapted for use1n connection with envelop machines for feeding in rapid successionenvelop blanks which are destined to be gummed and folded into envelopeby subsequent mechanism. Such envelop blanks, as 3, Fig. 1, may be ofgeneral rectangular form with portions cut from each corner thereofwhereby a reentrant angle, as 4, is formed in each corner, theregproviding-. fiaps, preferably wedge shap as leading flap 5 and sideflaps 6 and 7. Machinery of this character is oppurpose of descriptionand erated at high speed, several blanks being successively fedforwardly, synchronized, located crosswise of the machine, and again fedforwardly in synchronism and cross reglster, within one second of time.When said blanks are made of thin paper, it has been observed that thesudden positive stopping thereof, as by pins 10, tends to upset or crushthe edge of the blank at the points of contact with those pins, therebyinjuriously affectingv the accuracy of location of the blank, relativelyto the mechanism which thereafter operates on the blank for making theenvelop. The result is inaccurately folded envelops.

One of the objects of my improvements is to eliminate this tendencytmmutilate and misplace the blank.

The several parts of my improved mechanism may be supported in the usualside frames, one of WhlCh, 8, is shown. Supported on cross rod 9 fixedin said side frames is table 11, over which pass a plurality of feedbelts, as 12 and 13. Said belts are supported on the usual pulleys as14, and on similar pulleys, not shown, at the left hand or entrance endof the machine. Said ulleys may be driven by some convenient means, notshown, in clockwise direction. Said pulleys, as 14, are provided withlocating collars. having set screws as 15 whereby they may be adjustedcrosswise of-the machine on their shaft 16, thereby adjusting belts 12and 13 to accommodate different widths of blanks. Situated just abovesaid pulle s, supported by fixed shaft 17 andadusta le lengthwisethereof, are retaining blades 18 and 19. Said blades are efiicient forpreventing upward buckling of the sheet as it is advanced by belts l2and 18'. If desired, said blades may each be provided with one or morepockets as 20 for the retention of rolls or balls as 21111 engagementwlth the top of the blank.

' For positively stopping the blank in de- I its .length engaged by thesocket osiusual set screws as 24 respectively. Said pins 10 are mountedfor ad ustment length- .wise of the machine in their respective.sockets, as particularly illustrated in Fig. 2, wherein screw 25 isprovided for such adjustment. By means of the adjustments justdescribed, said pins may be set to coact with the opposite reentrantcorners of the leading end of the blank, whereby said blank may besimultaneously positively stopped in its advancement and locatedcrosswise of the machine.

Shaft 22 is revolubly mounted in-suitable bearings in the side frames as8 and means are-provided for rotating that shaft a partial rotation andback again for removing Said stop pins from engagement with the sheetand returning them for engagement with the next succeeding sheet. Thismeans comprises gear 26 fixed on one outboard end of shaft 22, Fig. 1,in coaction with a rocking segment gear on arm 27 in engagement withsaid gear 26. Said rocking segment arm is pivotally mounted on stud 28fixed in frame 8, and is provided with roll 29 pivotally mounted on adownwardly reaching portion of said arm for engagement with cam 30 fixedto gear 31 rotatably mounted on stud 32 in said side frame 8. By thismeans pins 10 are intermittently rocked to and fro about the axis ofshaft 22. Preferably said stop pins 10 are located between thebifurcated ends 33 respectively of blades 18 and-19, and said pinspreferably project downwardly into chamber 34 of table 35. Said table 35may be supported from the side frames and its .upper surface is'preferably in the same horizontal plane as the upper surfaces of beltsl2 and 13.

Between the delivery portions of belts 12 and 13, I provideintermittently operative means for advancing the sheet, comprising.a--plurality of lower rolls as 36 adjus'tably fixed to shaft 37, and aplurality of upper rolls as 38 similarly fixed to shaft 39. Said upperrolls are preferably segmental, whereby during a part of each revolutionthereof, said upper and lower rolls coact respectively to feed theblank, and during another part of their revolution they fail to coact'to feed the blank- Shaft 37 has fixed thereto gear 40 meshing on oneside with gear 31 and .-on another side with gear 41 fixed to shaft 39.-

Interposed between the sheet advancing means comprising belts 12 and 13and the positive sheet stopping meanscomprising pins 10, I provide meansfor retarding and gradually stoppin the sheet, comprising a plurality ofretar ing blades as 42 and 43. The'operative ends, as 44, of said bladesare preferably located just rearwardly of the transverse vertical planethrough the axis of stop pin shaft 22, and said blades, mounted on headsas 46, are preferably supported said blades.

-46. The points of said set screws impinge against the upper faces ofsaid blades respectively a short distance from the point of positivefastening to the heads at 46.

For rocking shaft. 45 to cause the operative ends 44 of blades 42 and 43to move into and out of engagement with the sheet, I provide thefollowing means: On one outboard end of said shaft 45 is adj ustablyfixed arm 50 carrying roll 51 for engagement with cam 52 fixed to gear31. For urging roll 51 to engagement with its cam 52, I provide leafspring 53 in engagement with arm 50. For adjusting shaft 45circumferentially relatively to arm 50, I provide screw 54 in said armin engagement with coacting teeth in shaft 45, and for holding said armin fixed relation to said shaft, 1 provide binding screw.55 in said arm.By means of this device blades 42 and 43 may be adjusted to move inunison toward and from the sheet.

For advancing the sheets after they have been synchronized andtransversely located, I provide the usual upperand, lower feed rolls as56 and 57 on shafts 58 and 59 respectively. Said shafts may be gearedtogether by the usual gears 60 and 61 respectively, and gear '61 may beactuated from gear 40 through intermediate gear 62.

The operating of my improved mechanism is as follows: A sheet, such asthat illustrated at 3, Figs. 1 and 2, having been placed upon feed belts12 and 13, and blades 42 and 43 being in contact with. the upper face oftable 35, said sheet is advanced by said belts onto said table 35 andinto engagement with The impact of said sheet against the underside ofsaid blades tends to lift the engaging ends 44 of those bladesrespectively and the sheet is gradually stopped thereby, Fig. 2. At thistime stop pins 10 have been swung in clockwise direction to the positionof Fig. 2. Directly thereafter shaft 45 is rocked in anti-clockwisedirection, lifting blades 42 and 43 from, engagement with the sheet,thereby. permitting said sheet to be moved forwardly under the influenceof belts 12 and 13, against stop pins 10,, Fig.3. Directly thereafterblades 42 and 43 descend, clamping the sheet against table 35, Fig. 4.Thereupon shaft 2 'rotates in anti-clockwise direction, swinging stoppins 10 out of engagement with the leading end of the blank; at the sametime segmental feed rolls 38 rotate to the point of engagement with thesheet, Fig. 5. Blades 42 and 43 are then again raised from engagementwith the blank, stop pins 10 continue their anti-clockwise rotation outof the path of the blank and segmental rolls 38 in coactionwith therolls therebelow advance the synchronized and transversely located sheetinto engagement with feed rolls 56 and 57, Fi I 6. I

I claim:

l. A device of the class specified including in combination means foradvancing a sheet, means for positively stopping the sheet,intermittently operative means for subsequently advancing the sheet,means for removing-said positive stopping means from engagement with.the sheet, and means preceding said positive stopping means for firstgradually stopping'said sheet, for then releasing said sheet forengagement with said positive stopping means and for then holding saidsheet in a stateof rest during the removal of said positive stoppingmeans and for finally releasing said sheet synchronously with theengagement of the sheet by the intermittently operative advancing means.

2. A device of the class specified including in combination means foradvancing a sheet, means for positively stopping the sheet, means forremoving said positive stopping means from engagement with the sheet,

means for adjusting said positive stopping means crosswise of themachme, means for adjusting said positive stopping means lengthwise ofthe machine, means for gradually stopping the sheet and for thereafterreleasing said sheet, means for adjusting said gradual stopping meanscrosswise of .the machine, means for adjusting said gradual stoppingmeans toward and from the sheet, and means for advancing the sheet afterits release by said positive stopping means.

3. A device of the class specified including in combination means foradvancing a sheet, a plurality ofstop blades for gradually stopping thesheet, means for positively stopping the sheet, means for removing saidpositive stopping means from engagement with the sheet, intermittentlyoperative means for adva'ncing the sheet, means for causing said stopblades to. first gradually stop the sheet, to then release the sheet forengagement with the positive stopping means, to then reengage the sheetand hold it in a state of rest during the removal of the positivestopping means from engagement with the sheet, and finally to releasesaid sheet synchronously with the engagement of the sheet by theintermittently operative advancing means, and

the operation of the several recited instrumentalities.

4. A device of the class specified including in combination means foradvancing a sheet, a plurality of stop blades for gradually stopping thesheet, means for positively stopping the sheet, means for removing saidpositive stopping means from engagement with the sheet, intermittentlyoperative means for advancing the sheet, means for adjusting said stopblades crosswise of the machine, means for adjusting said stop blades inunison toward and from the sheet, means for adjusting said stop bladesindependently toward and from the sheet, and means for causing said stopblades to first gradually stop the sheet, to then release the sheet forengagement with the positive stopping means, to then rengage the sheetand hold it in a state of rest during the removal of the positivestopping means from engagement with the sheet, and finally to releasesaid sheet synchronously with the engagement of the sheet by theintermittentlypperative advancing means.

5. A device of the class specified including in combination continuouslyoperative means for advancing a sheet, a plurality of stop blades forgradually stopping the sheet, means for adjusting said stop bladescrosswise of the machine, means for adjusting said stop blades in unisontoward and from the sheet, means for adjusting said stop bladesindependently toward and from the sheet, means for positively stoppingthe sheet, means for removing said positive stopping means fromengagement with the sheet, means for adjusting said positive stoppingmeans crosswise of the machine, means for adjusting said positivestopping means;

lengthwise of the machine, intermittently operative means for advancingthe sheet, means for causing said stop blades to first gradually stopthe sheet, to then release the sheet for engagement with the positivestopping means, to then reengage the sheet and hold it in a state ofrest during the removal of the positive stopping means from engagementwith the sheet, and finally to release said sheet synchronously with theengagement of the sheet by the intermittently operative advancing means,and means for maintaining the sheet in an approximately constant path oftravel during the operation of the several recited instrumentalitles.

6. A device of the class specified including in combination means foradvancing a sheet having a wedge shaped leading end,-means forengagement with said wedge shaped leading end for simultaneouslypositively stopping the advancement of the sheet and for locating saidsheet crosswise of the machine, intermittently operative means foradvancing the sheet,' means for removing said positive stopping-meansfrom engagement with the sheet, and means preceding said positivestopping means for first gradually stopping said sheet, for thenreleasing said sheet for engagement with said positive stopping meansand for then holding said sheet in a state of rest during the removal ofsaid positive stopping means and for finally releasing said sheetsynchronously with the engagement of the sheet by the intermittentlyoperative advancing means.

7. A device of the class specified including in combination means foradvancing a sheet, means for positively stopping the sheet, means forsubsequently advancing the sheet, stationary means adjacent saidpositive stopping means for supporting the sheet, oscillatable means forpressing the sheet to engagement with said stationary suppporting means,means for operating said oscillatable means to coaction with saidstationary supporting means for at one time gradually stopping the sheetand at another time clamping the sheet at rest, and means for removingsaid positive stopping means,

from the path of the sheet.

8. A device of the class specified including in combination means foradvancing a sheet having a wedge shaped leading end, means forengagement with said wedge shaped leading end for simultaneouslypositively stopping the advancement of the sheet and for locating saidsheet crosswise of the machine, means for removing said positivestopping means from engagement with the sheet, means for adjusting saidpositive stopping means crosswise of the machine, means for adjustingsaid positive stopping means lengthwise of the machine, means forgradually stoppin the sheet and for thereafter releasing said s eet,means for adjusting said gradual stopping means crosswise of themachine, means for adjusting said gradual stopping means toward and fromthe sheet, and means for advancing the sheet after its release by saidpositive stopping means.

9. A device of the class specified including in combination means foradvancing a sheet having a wedge shaped leading end, means forengagement with said wedge shaped leading end for simultaneouslypositively stopping the advancement of the sheet and for locating saidsheet crosswise of the machine, means for removing said positivestopping means from engagement with the sheet, intermittently operativemeans for advancing the sheet, a plurality of stop blades for graduallystopping the sheet, means for causing said stop blades to firstgradually stop the sheet, to then release the sheet for engagement withthe positive stopping means, to then rengage the sheet and hold it in astate of rest during the removal of the positive stopping means fromengagement with the sheet, and finally to release said sheetsynchronously with the engagement of the sheet by the intermittentlyoperative advancing means, and means for maintaining the sheet in anapproximately constant path of travel during the operation of theseveral recited instrumentalities.

Signed at New York, in the county of New York and State of New York,this 15th 7 day of Sept, 1913, before two subscribing witnesses.

ABRAHAM NOVIGK.

Witnesses FERDINAND L. SCHMIDT, WILBUR M. STONE.

